ENDRESS+HAUSER  CPS171D-AA7NTP2

For biotechnology production processes with ion trap for long-term stable reference

Hygienic and sterile applications (sterilizable, autoclavable)

• Bioreactor/fermenter
• Biotechnology
• Pharmaceutical industry
• Foods

With ATEX/IECEx, FM, CSA, NEPSI, FDA and USP approval for use in hazardous areas.

• Biocompatibility with regard to cytotoxicity and bioreactivity has been tested successfully
• Documentation to certify compliance with requirements of pharmaceutical industry with serial number of sensor (optional)
• Durable inscription on shaft, verified as non-cytotoxic
• Suitable for CIP/SIP cleaning, autoclavable, up to 140 °C (284 °F) depending on version
• Pressurized reference, specially for fermentation processes
• Integrated pressure indicator
• Long-term stable reference with ion trap, resulting in a very long service life, bridging electrolyte free of silver ions
• No change in color of gel
• Ceramic diaphragm
• Integrated temperature sensor for effective temperature compensation
• No materials derived from animals were used in the manufacture of parts in contact with the process media

• Maximum process safety thanks to non-contact, inductive signal transmission
• Data security thanks to digital data transmission
• Very easy to use as sensor data saved in the sensor
• Recording of sensor load data in the sensor enables predictive maintenance with the Memobase Plus CYZ71D

The pH value is used as a unit of measurement for the acidity or alkalinity of a liquid medium. The membrane glass of the electrode delivers an electrochemical potential that depends on the pH value of the medium. This potential is generated by the selective penetration of H + ions through the outer layer of the membrane. An electrochemical boundary layer with an electric potential forms at this point. An integrated Ag/AgCl reference system serves as the required reference electrode. The transmitter converts the measured voltage into the corresponding pH value using the Nernst equation.

A complete measuring system consists of the following components at least:

• pH electrode CPS171D
• Transmitter, e.g. Liquiline M CM42, CM44x/R
• Memosens data cable CYK10
• Assembly, e.g. Unifit CPA442